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JSON Toolkit
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JSON Diff – Compare Two JSON Files Online

100% Client-Side

Compare two JSON documents side-by-side to instantly see differences in structure, values, and data types. Highlights added, deleted, and modified fields with color-coded diff tags—all processing happens in your browser.

Home/JSON Diff – Compare Two JSON Files Online
FormatValidateBeautifyTree ViewMinifyDiffJSON → CSVCSV → JSONJSON → YAMLYAML → JSONJSON → TS
Comparing JSON Documents

How to use JSON Diff

  1. Paste or upload the original JSON in the left input area.
  2. Paste or upload the modified JSON in the right input area.
  3. View the differences in the results panel below.
  4. Use the Load Sample Diff button to see an example comparison.
  5. Click Clear both inputs to start a new comparison.
ORIGINAL JSON (LEFT)
MODIFIED JSON (RIGHT)
STRUCTURAL DIFF RESULTS0 differences

Key Capabilities

Side-by-side structural object comparison
Color-coded diff tags: Added (green), Deleted (red), Modified (amber)
Deep key path resolution for nested objects and array indices

Frequently Asked Questions

What is a JSON diff used for?

A JSON diff compares two JSON documents to identify exactly what has changed between them, showing additions, deletions, and modifications in a clear, side-by-side view.

How does JSON comparison work?

The JSON Diff tool parses both JSON documents into objects and recursively compares each property path to detect differences in keys, values, and data types, regardless of whitespace or formatting.

Can I compare more than two JSON files?

The JSON Diff tool is designed to compare two JSON documents at a time. To compare more than two, you can compare them pairwise or use external tools that support multi-way comparison.